ARK Invest made broad portfolio adjustments on September 9, 2026, and in related Wednesday trades, buying Meta Platforms, Cerebras Systems, Archer Aviation and biotechnology companies while selling Alphabet, Advanced Micro Devices, Palantir Technologies, Tempus AI and other holdings. The reported purchases included 43,091 Meta shares worth approximately $28.1 million and 93,290 Cerebras shares valued at about $17.2 million, while sales included 84,392 Alphabet Class A shares worth approximately $27.9 million, 19,491 AMD shares worth $9.9 million and 38,395 Palantir shares worth $6.5 million.